DS31038 Rev. 5 - 2
1 of 3
MMSZ5221BS - MMSZ5259BS
www.diodes.com
Planar Die Construction
Ultra-Small Surface Mount Package
General Purpose
Ideally suited for Automated Assembly
Processes
Features
Maximum Ratings
@ T
A
= 25
C unless otherwise specified
Characteristic
Symbol
Value
Unit
Forward Voltage (Note 2)
@ I
F
= 10mA
V
F
0.9
V
Power Dissipation (Note 1)
P
d
200
mW
Thermal Resistance, Junction to Ambient Air (Note 1)
R
qJA
625
C/W
Operating and Storage Temperature Range
T
j,
T
STG
-65 to +150
C
Notes:
1. Part mounted on FR-4 PC board with recommended pad layout, which can be found on our website
at http://www.diodes.com/datasheets/ap02001.pdf.
2. Short duration pulse test used to minimize self-heating effect.
Mechanical Data
MMSZ5221BS - MMSZ5259BS
SURFACE MOUNT ZENER DIODE
A
B
C
D
E
G
H
J
Case: SOD-323, Plastic
Case Material - UL Flammability Classification
Rating 94V-0
Moisture Sensitivity: Level 1 per J-STD-020A
Terminals: Solderable per MIL-STD-202,
Method 208
Polarity: Cathode Band
Marking: See Page 2
Weight: 0.004 grams (approx.)
SOD-323
Dim
Min
Max
A
2.30
2.70
B
1.60
1.80
C
1.20
1.40
D
1.05 Typical
E
0.25
0.35
G
0.20
0.40
H
0.10
0.15
J
0.05 Typical
a
0
8
All Dimensions in mm
Notes:
3. For Packaging Details, go to our website at: http://www.diodes.com/datasheets/ap02007.pdf.
*Add "-7" to the appropriate type number in Table 1 above example: 6.2V Zener = MMSZ5234BS-7.
DS31038 Rev. 5 - 2
2 of 3
MMSZ5221BS - MMSZ5259BS
www.diodes.com
Electrical Characteristics
@ T
A
= 25
C unless otherwise specified
Notes:
1. Short duration test pulse used to minimize self-heating effect.
2. f = 1KHz.
Type
Number
Marking
Code
Zener Voltage Range (Note 1)
Test
Current
Maximum Zener
Impedance (Note 2)
Maximum Reverse
Leakage Current (Note 1)
V
Z
@ I
ZT
I
ZT
Z
ZT @
I
ZT
Z
ZK
@ I
ZK
= 0.25mA
I
R
@ V
R
Nom (V)
Min (V)
Max (V)
mA
W
mA
V
MMSZ5221BS
C1
2.4
2.28
2.52
20
30
1200
100
1.0
MMSZ5223BS
C3
2.7
2.57
2.84
20
30
1300
75
1.0
MMSZ5225BS
C5
3.0
2.85
3.15
20
30
1600
50
1.0
MMSZ5226BS
G1
3.3
3.14
3.47
20
28
1600
25
1.0
MMSZ5227BS
G2
3.6
3.42
3.78
20
24
1700
15
1.0
MMSZ5228BS
G3
3.9
3.71
4.10
20
23
1900
10
1.0
MMSZ5229BS
G4
4.3
4.09
4.52
20
22
2000
5.0
1.0
MMSZ5230BS
G5
4.7
4.4 7
4.94
20
19
1900
5.0
2.0
MMSZ5231BS
E1
5.1
4.85
5.36
20
17
1600
5.0
2.0
MMSZ5232BS
E2
5.6
5.32
5.88
20
11
1600
5.0
3.0
MMSZ5233BS
E3
6.0
5.70
6.30
20
7
1600
5.0
3.5
MMSZ5234BS
E4
6.2
5.89
6.51
20
7
1000
5.0
4.0
MMSZ5235BS
E5
6.8
6.46
7.14
20
5
750
3.0
5.0
MMSZ5236BS
F1
7.5
7.13
7.88
20
6
500
3.0
6.0
MMSZ5237BS
F2
8.2
7.79
8.61
20
8
500
3.0
6.5
MMSZ5238BS
F3
8.7
8.27
9.14
20
8
600
3.0
6.5
MMSZ5239BS
F4
9.1
8.65
9.56
20
10
600
3.0
7.0
MMSZ5240BS
F5
10
9.50
10.50
20
17
600
3.0
8.0
MMSZ5241BS
H1
11
10.45
11.55
20
22
600
2.0
8.4
MMSZ5242BS
H2
12
11.40
12.60
20
30
600
1.0
9.1
MMSZ5243BS
H3
13
12.35
13.65
9.5
13
600
0.5
9.9
MMSZ5245BS
H5
15
14.25
15.75
8.5
16
600
0.1
11
MMSZ5246BS
J1
16
15.20
16.80
7.8
17
600
0.1
12
MMSZ5248BS
J3
18
17.10
18.90
7.0
21
600
0.1
14
MMSZ5250BS
J5
20
19.00
21.00
6.2
25
600
0.1
15
MMSZ5251BS
K1
22
20.90
23.10
5.6
29
600
0.1
17
MMSZ5252BS
K2
24
22.80
25.20
5.2
33
600
0.1
18
MMSZ5254BS
K4
27
25.65
28.35
5.0
41
600
0.1
21
MMSZ5255BS
K5
28
26.60
29.40
4.5
44
600
0.1
21
MMSZ5256BS
M1
30
28.50
31.50
4.2
49
600
0.1
23
MMSZ5257BS
M2
33
31.35
34.65
3.8
58
700
0.1
25
MMSZ5258BS
M3
36
34.20
37.80
3.4
70
700
0.1
27
MMSZ5259BS
M4
39
37.05
40.95
3.2
80
800
0.1
30
XX = Product Type Marking Code
(See Table Above)
XX
Marking Information
Device
Packaging
Shipping
(Type Number)-7*
SOD-323
3000/Tape & Reel
Ordering Information
(Note 3)
DS31038 Rev. 5 - 2
3 of 3
MMSZ5221BS - MMSZ5259BS
www.diodes.com
0
10
20
30
0
I
,
ZENER
CURRENT
(
mA)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 6 Zener Breakdown Characteristics
10
20
30
40
T = 25C
j
Test current I
Z
10
12
18
22
27
33
36
15
39
Nominal Zener Voltage
0
10
20
30
40
50
0
1
2
3
4
5
6
7
8
9
10
I
,
ZENER
CURRENT
(
mA)
Z
V , ZENER VOLTAGE (V)
Z
Fig. 5 Zener Breakdown Characteristics
T = 25C
j
5V6
6V8
8V2
Test Current I
Z
20mA
1
10
100
1
10
100
P
,
P
E
A
KS
U
R
G
EP
O
WER
(W)
PK
PULSE WIDTH (ms)
Fig. 4 Maximum Non-repetitive Surge Power
1000
1
10
100
1000
1
10
100
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 3 Zener Impedance vs. Zener Voltage
I = 1.0mA
Z
1
10
100
1000
1
10
100
C,
T
O
T
A
L
C
AP
ACIT
ANCE
(pF)
T
V , NOMINAL ZENER VOLTAGE (V)
Z
Fig. 2 Typical Capacitance
0V BIAS
f = 1MHz
0
0.1
0.2
0.3
0.4
25
0
50
75
100
125
150
P,
P
O
WER
D
ISSIP
A
TI
O
N(
W
)
D
T , AMBIENT TEMPERATURE (
C)
A
Fig. 1 Power Dissipation vs Ambient Temperature
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